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A Real-Time Generation Planning Method Considering Security Constraints

A technology of real-time power generation planning and safety constraints, applied in the direction of AC network voltage adjustment, single-network parallel feeding arrangement, etc., can solve the problem of high requirements for automatic power generation control AGC units, single real-time power generation planning strategy, and insufficient consideration of power flow limit violations In order to achieve the effect of improving the preparation efficiency and planning feasibility, eliminating branch overruns, and increasing operational stability

Active Publication Date: 2018-11-27
STATE GRID CORP OF CHINA +1
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a real-time power generation planning method considering safety constraints, which solves the problem of single real-time power generation planning strategy in the existing network provincial dispatching center, insufficient consideration of power flow over-limit conditions, and requirements for automatic power generation control AGC units High and potential safety hazards

Method used

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  • A Real-Time Generation Planning Method Considering Security Constraints
  • A Real-Time Generation Planning Method Considering Security Constraints
  • A Real-Time Generation Planning Method Considering Security Constraints

Examples

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Embodiment 1

[0045] like figure 1 Shown, the inventive method of this example comprises the following steps:

[0046] 1. Obtain the peripheral data required for real-time power generation planning, including the actual output of the unit at the current moment, the unit’s intraday power generation plan, ultra-short-term load forecast data, and tie-line plan, etc.

[0047] 2. Calculate the real-time plan deviation distribution amount at the next moment according to the acquired relevant data. The deviation distribution amount is obtained by accumulating the load deviation amount, unit plan deviation amount and AGC compensation amount. The load deviation is obtained from the current actual load and the predicted load at the next moment, the unit plan deviation is the change between the current unit plan and the next moment unit plan, and the AGC compensation is the AGC quickly adjusts the current output of the unit to the intermediate output The amount of change required.

[0048]

[004...

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Abstract

The invention relates to a real-time power generation plan compilation method considering security constraint. The method includes the following steps: acquiring required peripheral data of a real-time power generation plan; determining a next-moment real-time plan deviation distribution amount; determining the real-time power generation plan of a unit; determining an off-limit branch power flow, a corresponding unit, and sensitivity information of the corresponding unit in an electrical power system; correcting branch off-limit; and adjusting power balance. According to the real-time power generation plan compilation method, a power flow off-limit branch is inversely pushed to a relevant unit by calculation of branch power flow off-limit situation and based on the branch sensitivity information of the unit, and branch off-limit can be eliminated by output regulation of the relevant unit; an AGC regulation amount is added to the deviation distribution amount to allow an AGC unit output to keep near the best output, the system regulation ability can be increased, and the security coefficient can be improved.

Description

Technical field: [0001] The invention relates to a real-time power generation plan preparation method, in particular to a real-time power generation plan preparation method considering safety constraints. Background technique: [0002] In the field of power system dispatching planning, the core technology safety-constrained dispatching in the power generation plan management of power system dispatching organizations includes two aspects: safety-constrained unit combination and safety-constrained economic dispatch. The goal of the power generation plan management of the dispatching organization is: under the premise of meeting various network and unit operating parameters, taking into account the requirements of various economic, energy-saving, and environmental protection policies, ensuring the balance of power generation and consumption of the system, so as to achieve grid security, Stable and high-quality operation. [0003] The real-time plan based on the intraday plan r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/12
Inventor 刘鹏戴赛崔辉许丹燕京华朱翊李伟刚朱泽磊黄国栋韩彬
Owner STATE GRID CORP OF CHINA
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